1 /*-
2 * SPDX-License-Identifier: ISC
3 *
4 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2005 Atheros Communications, Inc.
6 * Copyright (c) 2008-2010, Atheros Communications Inc.
7 *
8 * Permission to use, copy, modify, and/or distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 */
20
21 #include "opt_ah.h"
22
23 #include "ah.h"
24 #include "ah_internal.h"
25 #include "ah_devid.h"
26 #ifdef AH_DEBUG
27 #include "ah_desc.h" /* NB: for HAL_PHYERR* */
28 #endif
29
30 #include "ar5416/ar5416.h"
31 #include "ar5416/ar5416reg.h"
32 #include "ar5416/ar5416phy.h"
33 #include "ar5416/ar5416desc.h" /* AR5416_CONTTXMODE */
34
35 #include "ar9002/ar9285phy.h"
36 #include "ar9002/ar9285.h"
37
38 /*
39 * This is specific to Kite.
40 *
41 * Kiwi and others don't have antenna diversity like this.
42 */
43 void
ar9285BTCoexAntennaDiversity(struct ath_hal * ah)44 ar9285BTCoexAntennaDiversity(struct ath_hal *ah)
45 {
46 struct ath_hal_5416 *ahp = AH5416(ah);
47 u_int32_t regVal;
48 u_int8_t ant_div_control1, ant_div_control2;
49
50 HALDEBUG(ah, HAL_DEBUG_BT_COEX,
51 "%s: btCoexFlag: ALLOW=%d, ENABLE=%d\n",
52 __func__,
53 !! (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ALLOW),
54 !! (ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ENABLE));
55
56 if ((ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ALLOW) ||
57 (AH5212(ah)->ah_diversity != HAL_ANT_VARIABLE)) {
58 if ((ahp->ah_btCoexFlag & HAL_BT_COEX_FLAG_ANT_DIV_ENABLE) &&
59 (AH5212(ah)->ah_antControl == HAL_ANT_VARIABLE)) {
60 /* Enable antenna diversity */
61 ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_ENABLE;
62 ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_ENABLE;
63
64 /* Don't disable BT ant to allow BB to control SWCOM */
65 ahp->ah_btCoexMode2 &= (~(AR_BT_DISABLE_BT_ANT));
66 OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
67
68 /* Program the correct SWCOM table */
69 OS_REG_WRITE(ah, AR_PHY_SWITCH_COM,
70 HAL_BT_COEX_ANT_DIV_SWITCH_COM);
71 OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
72 } else if (AH5212(ah)->ah_antControl == HAL_ANT_FIXED_B) {
73 /* Disable antenna diversity. Use antenna B(LNA2) only. */
74 ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_FIXED_B;
75 ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_FIXED_B;
76
77 /* Disable BT ant to allow concurrent BT and WLAN receive */
78 ahp->ah_btCoexMode2 |= AR_BT_DISABLE_BT_ANT;
79 OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
80
81 /*
82 * Program SWCOM table to make sure RF switch always parks
83 * at WLAN side
84 */
85 OS_REG_WRITE(ah, AR_PHY_SWITCH_COM,
86 HAL_BT_COEX_ANT_DIV_SWITCH_COM);
87 OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0x60000000, 0xf0000000);
88 } else {
89 /* Disable antenna diversity. Use antenna A(LNA1) only */
90 ant_div_control1 = HAL_BT_COEX_ANTDIV_CONTROL1_FIXED_A;
91 ant_div_control2 = HAL_BT_COEX_ANTDIV_CONTROL2_FIXED_A;
92
93 /* Disable BT ant to allow concurrent BT and WLAN receive */
94 ahp->ah_btCoexMode2 |= AR_BT_DISABLE_BT_ANT;
95 OS_REG_WRITE(ah, AR_BT_COEX_MODE2, ahp->ah_btCoexMode2);
96
97 /*
98 * Program SWCOM table to make sure RF switch always
99 * parks at BT side
100 */
101 OS_REG_WRITE(ah, AR_PHY_SWITCH_COM, 0);
102 OS_REG_RMW(ah, AR_PHY_SWITCH_CHAIN_0, 0, 0xf0000000);
103 }
104
105 regVal = OS_REG_READ(ah, AR_PHY_MULTICHAIN_GAIN_CTL);
106 regVal &= (~(AR_PHY_9285_ANT_DIV_CTL_ALL));
107 /*
108 * Clear ant_fast_div_bias [14:9] since for Janus the main LNA is
109 * always LNA1.
110 */
111 regVal &= (~(AR_PHY_9285_FAST_DIV_BIAS));
112
113 regVal |= SM(ant_div_control1, AR_PHY_9285_ANT_DIV_CTL);
114 regVal |= SM(ant_div_control2, AR_PHY_9285_ANT_DIV_ALT_LNACONF);
115 regVal |= SM((ant_div_control2 >> 2), AR_PHY_9285_ANT_DIV_MAIN_LNACONF);
116 regVal |= SM((ant_div_control1 >> 1), AR_PHY_9285_ANT_DIV_ALT_GAINTB);
117 regVal |= SM((ant_div_control1 >> 2), AR_PHY_9285_ANT_DIV_MAIN_GAINTB);
118 OS_REG_WRITE(ah, AR_PHY_MULTICHAIN_GAIN_CTL, regVal);
119
120 regVal = OS_REG_READ(ah, AR_PHY_CCK_DETECT);
121 regVal &= (~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
122 regVal |= SM((ant_div_control1 >> 3),
123 AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
124 OS_REG_WRITE(ah, AR_PHY_CCK_DETECT, regVal);
125 }
126 }
127
128 void
ar9285BTCoexSetParameter(struct ath_hal * ah,u_int32_t type,u_int32_t value)129 ar9285BTCoexSetParameter(struct ath_hal *ah, u_int32_t type, u_int32_t value)
130 {
131 struct ath_hal_5416 *ahp = AH5416(ah);
132
133 switch (type) {
134 case HAL_BT_COEX_ANTENNA_DIVERSITY:
135 if (AR_SREV_KITE(ah)) {
136 ahp->ah_btCoexFlag |= HAL_BT_COEX_FLAG_ANT_DIV_ALLOW;
137 if (value)
138 ahp->ah_btCoexFlag |=
139 HAL_BT_COEX_FLAG_ANT_DIV_ENABLE;
140 else
141 ahp->ah_btCoexFlag &=
142 ~HAL_BT_COEX_FLAG_ANT_DIV_ENABLE;
143 ar9285BTCoexAntennaDiversity(ah);
144 }
145 break;
146 default:
147 ar5416BTCoexSetParameter(ah, type, value);
148 break;
149 }
150 }
151